Fire department connection plug



FIG. 1 is a perspective view of my new fire department connection plug design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof; and,

FIG. 4 is a side elevational view thereof.

The broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a fire department connection plug, as shown and described. 